This little guy keeps begging for bread just about every day at the air port Cafe, you would think he was really starving.
Truth is, that Sparrows have to eat 5 times their body weight to live every day and I see one very fat little sparrow!
Some people look like a Sparrow but humans don’t burn up the calories like birds do, otherwise people would not survive, birds convert their fat in one go into CO2 and water. People do that in several stages and that is how we survive.
Birds have a different metabolism. However, a bird that over eats such as a budgie also dies of another type of obesity and liver damage.
Wild birds do well. Caged birds need proper vet nutrition…